op {
  graph_op_name: "RefNextIteration"
  in_arg {
    name: "data"
    description: <<END
The tensor to be made available to the next iteration.
END
  }
  out_arg {
    name: "output"
    description: <<END
The same tensor as `data`.
END
  }
  summary: "Makes its input available to the next iteration."
}
